Java Primitive Data Types and Variables

What is the data type of the following literal? "fooled you"

What is the camel case variable name for a variable that represents the top score?

What are the three primitive data types that will be tested on the AP Exam?

What is the camel case variable name for a variable that represents a shoe size?

What data type should you use to represent the average grade for a course?

What data type should you use for a shoe size like 8.5?

What data type should you use to record if it is raining or not?

What is the data type of the following literal? 'A'

What data type holds true/false values?

What data type should you use to represent the amount of money in a bank account?

Which of the following is NOT the name of a Java primitive data type?

What are the two varieties of data in Java?

Which of the following is the correct header line for the main method in Java?

A ______ is a note written to a human reader of a program.

Which of the following will result in an error?

What are the two steps that take place when an assignment statement is executed?

On a single line of code declare x, y, and z all to be an integer data type.

(2 - 6) / 2 + 9

Which of the following is legal?

State what is printed. int x = 40; int y = 4; System.out.println(2 + 8 * y / 2 - x);

What is the value of the expression: -5 * 9 / 10 + 10 * 5 / 9

On a single line of code declare x, y, and z to be double and on that same line initialize them all to be 3.14.

State what is printed. int a = 100; int b = 200; b/=a; System.out.println(b + 1);

What is another way to write p = p - 1;?

The following code stores a 20 in the variable num; double num = 61/3; What small change can you make to this single line of code to make it produce the "real" answer to the division?

State what is printed. System.out.println((double)(90/9));

Write code that will calculate and print the square root of 435.61.

Which of the following would return a random number from 1 to 6 inclusive?

What is the purpose of wrapper classes?

Write a Java formula using the Math class for: Distance = |val1 - val2|

Evaluate: Math.ceil(115.8)

Evaluate: Math.abs(2 + -4)

Evaluate: Math.sqrt(16) * Math.max(Math.abs(-5), Math.abs(-3))

The classes that convert primitives to objects are called _____ classes

Evaluate: Math.min( 8, 3 + 2 )

Write a formula that will find the distance between two values, num1 and num2 by taking the absolute value of their difference. Assign the answer to double x.

Evaluate: Math.sqrt(76 + 45)

Which of the following would return a random int from 1 to 10 inclusive?

What is the value of len after the following executes? String s1 = "Love you!"; int len = s1.length();

What is the value of str2 after the following code executes? String s1 = "helicopter"; String s2 = s1.substring(4, 7);

Consider the following code segment. String s1 = "Queen Mary"; String s2 = "1936 Queen Mary"; String s3 = "Queen Elizabeth"; System.out.print(s2.indexOf(s1) + " "); System.out.println(s1.indexOf(s3)); What will be output when the code segment executes?

What will be the value of r? String r = "Saturday Night Live"; r = r.substring(5, 8);

Consider the following code segment. String s1 = "Djakarta"; String s2 = s1.substring(3, 7); String s3 =s1.substring(3); System.out.println(s2); System.out.println(s3); What will be output when the code segment executes?

Consider the following code segment. String test = "This is a test."; System.out.println(test.indexOf("is")); What is printed as a result of executing the code segment?

What is the output from the following code? String s = "Computer Science is fun!"; String s1 = s.substring(0, 8); String s2 = s1.substring(1); String s3 = s2.substring(1, 3); System.out.println(s3);

Consider the following code segment. String str = "Hello World!"; System.out.println(str.length()); What is printed as a result of executing the code segment?

Consider the following code segment. String s1 = "A"; String s2 = "H"; System.out.print(s1.compareTo("B")); System.out.print(" "); System.out.println(s2.compareTo("B")); What is printed as a result of executing the code segment?

Write a series of statements which acquires the length of name and stores it in a variable named len. You must first declare len. String name = "SpongeBob SquarePants";

Examine this code: String str = "Hello World!" ; What is the index of the character 'e' ?

What sort of thing is "Happy Days" in the following: String str = "Happy Days";

What is returned by a method of type void?

New objects can be created by using the new operator with an appropriate constructor.

What is the relationship between an object, method, and a class.

Which of the following is equivalent to !(a && (c < d))

Consider the following declarations. int valueOne, valueTwo; Assume that valueOne and valueTwo have been initialized. Which of the following evaluates to true if valueOne and valueTwo contain the same value?

The boolean expression !(A || B) evaluates to

State what's printed: int a = 84, a= 1; boolean tf = true; System.out.println(tf && !tf);

Consider the following code segment which is intended to assign true to between if x is between lower and upper, inclusive, and false otherwise. Assume lower = lower) && (x = 90)isPassing = true;else if (testAverage >= 75 && assignmentsCompleted >= 4)isPassing = true;elseisPassing = false;II. boolean pass = false;if (testAverage >= 90)pass = true;else if (testAverage >= 75 && assignmentsCompleted >= 4)pass = true;isPassing = pass;III. isPassing = (testAverage >= 90) || (testAverage >= 75 && assignmentsCompleted >= 4);Which of the implementations will work correctly assuming that the variables have been initialized?

State what's printed: int a = 84, b = 1; boolean tf = true; System.out.println((a != 1) || tf || (a == b));

What is output by the following code? int a = 90, b = 8; if( (ab) ) a = b; System.out.println(b++);

A teacher put three bonus questions on a test and awarded 5 extra points to anyone who answered all bonus questions correctly and no extra points otherwise. Assume that the boolean variables bonusOne, bonusTwo, and bonusThree indicate whether a student has answered the particular question correctly. Each variable was assigned true if the answer was correct and false if the answer was incorrect. Which of the following code segments will properly update the variable grade based on a student's performance on the bonus questions? I. if (bonusOne && bonusTwo && bonusThree) grade += 5; II. if (bonusOne || bonusTwo || bonusThree) grade += 5; III. if (bonusOne) grade += 5; if (bonusTwo) grade += 5; if (bonusThree) grade +=5;

Consider the following code segment. int x = ; int y = ; boolean result = (x < y); result = ( (x >= y) && !result ); Which of the following best describes the conditions under which the value of result will be true after the code segment is executed?

The boolean expression (A || B) && (!A || !B) evaluates to

Consider the following code segment. Assume value is an int. if (value < 0) || value < 100)System.out.print("Not in range"); elseSystem.out.print("In range"); Consider the following code segments that could be used to replace the code. I. if (value < 0){if (value > 100)System.out.print("Not in range"); elseSystem.out.print("In range");}elseSystem.out.print("In range");II. if (value < 0)System.out.print("Not in range"); else if (value < 100)System.out.print("Not in range");elseSystem.out.print("In range");III. if (value >= 0)System.out.print("In range"); else if (value b && b > c) if (b < a) b = -b; else a = -a;else if (a > b || b > c) if (a < c) c = -c; else if (! (c > b)) b = -a;Which of the implementations will work correctly assuming that the variables have been initialized?

Consider the following code. if (value < 0 || value > 100)System.out.println("true");elseSystem.out.println("false"); Given that value is an integer, which of the following code segments would have the same output as the code above?

Consider the following code segment. int result= 99; if (num1 == num2) {result = 0:} else if (num1 > num2) {result = 1;} else {result = -1;} System.out.println(result); Which of the following code segments will print the same result as the code above no matter what integers are stored in num1 and num2?

Consider the following code segment. int x = int n = 100;if (x < 1000){ if (x > 1000) n = 200; else n = 300;}else{ if (x < 1000) n = 400; else n = 300;}System.out.println(n);What is printed as a result of executing the code segment?

Show the basic skeleton of an if - else structure.

What is output by the following? int x = 8, y = 5; if( !(x == y) ) { System.out.println("Sunday, Monday");} else { System.out.println("Happy Days!");}

Write a single statement that will store a true in the boolean variable tf only if boo is negative.

Determine the output of the following code segments. Write no output if there is no output. int i = 2; int j = 3; if (j + 9 == i) { System.out.println ("You got it!");}

State what is printed: int a = 84, b = 1; boolean boo = a != b; System.out.println(boo);

Determine the output of the following code segments. Write no output if there is no output. int i = 2; int j = 3; if (i > j) { System.out.println ("You got it!");}

How many different values can a boolean variable hold?

The ________ method is where a program starts running.

Create the heading for class called Skeleton.

Consider the following code: System.out.print("Fire"); System.out.println(" Ants"); Which of the following is actually printed?

Which of the following is the most acceptable way of naming a variable?

Which of the following is a keyword?

What data type would you use to store this number? 189.24

String

Camel Case

Primitive data types

double

boolean

int

char

Data Types in Java

Main Method

Comments

Assignment statement

Expression evaluation

Wrapper Classes

Math.abs()

Math.sqrt()

Math.random()

String.length()

String.substring()

String.indexOf()

String.compareTo()

Object

Method

Class

Boolean Expression

Logical Operators

If-else Statement

Keyword